公开(公告)号：US12078530B2

公开(公告)日：2024-09-03

申请号：US17306281

申请日：2021-05-03

Applicant: Waymo LLC

Inventor： Pierre-Yves Droz ,  David Hutchison

IPC: G01C3/08 ,  G01J1/04 ,  G01S7/481 ,  G01S17/89 ,  G02B6/08 ,  G01J1/44

CPC classification number: G01J1/0407 ,  G01J1/0411 ,  G01J1/0414 ,  G01J1/0425 ,  G01J1/0437 ,  G01S7/4816 ,  G01S7/4818 ,  G01S17/89 ,  G02B6/08 ,  G01J2001/4466

Abstract: The present disclosure relates to limitation of noise on light detectors using an aperture. One example implementation includes a system. The system includes a lens disposed relative to a scene. The lens focuses light from the scene. The system also includes an aperture defined within an opaque material. The system also includes a waveguide having a first side that receives light focused by the lens and transmitted through the aperture. The waveguide guides the received light toward a second side of the waveguide opposite to the first side. The waveguide has a third side extending between the first side and the second side. The system also includes an array of light detectors that intercepts and detects light propagating out of the third side of the waveguide.

公开(公告)号：US12031860B2

公开(公告)日：2024-07-09

申请号：US18019231

申请日：2021-07-14

Applicant: KONICA MINOLTA, INC.

Inventor： Yukitroy Williams ,  Yutaka Kadowaki

IPC: G01J1/04

CPC classification number: G01J1/0414 ,  G01J1/0403 ,  G01J1/044

Abstract: A photometer includes a luminous flux splitter that splits a luminous flux incident from a single light receiving optical system and guides the luminous flux to a finder optical system and a photometric part. A light receiver is arranged at a position to receive at least a part of light split into the finder optical system by the luminous flux splitter and generates an output for light emission profile analysis according to a light reception result.

公开(公告)号：US11911852B2

公开(公告)日：2024-02-27

申请号：US16306430

申请日：2017-01-25

Applicant: Primes GmbH Meßtechnik für die Produktion mit Laserstrahlung

Inventor： Reinhard Kramer ,  Otto Märten ,  Stefan Wolf ,  Roman Niedrig

IPC: B23K26/70 ,  B23K26/042 ,  B29C64/135 ,  B29C64/386 ,  B23K26/082 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/153 ,  G01J1/42 ,  B29C64/268 ,  G01J1/04 ,  B23K26/03 ,  B23K26/342 ,  B23K26/06 ,  B29C67/00 ,  G02B26/10 ,  G01J1/02 ,  B22F10/28 ,  B22F12/44 ,  B22F12/49 ,  B22F12/90 ,  B22F10/31

CPC classification number: B23K26/705 ,  B22F10/28 ,  B22F10/31 ,  B22F12/44 ,  B22F12/49 ,  B22F12/90 ,  B23K26/032 ,  B23K26/042 ,  B23K26/0648 ,  B23K26/082 ,  B23K26/342 ,  B29C64/135 ,  B29C64/153 ,  B29C64/268 ,  B29C64/386 ,  B29C67/00 ,  B33Y10/00 ,  B33Y30/00 ,  G01J1/0266 ,  G01J1/0411 ,  G01J1/0414 ,  G01J1/4228 ,  G01J1/4257 ,  G02B26/101 ,  B22F2999/00 ,  G01J2001/4261 ,  Y02P10/25

Abstract: The invention relates to a method and a device for the analysis of energy beams in systems for the additive manufacture of components (70) by means of layered solidification of a construction material (55) by an energy beam (30). The invention enables a determination of position-related beam data directly with respect to the processing point during the machining process. An additive manufacturing system includes a beam deflecting device (40), a processing plane (45), and a layer applicator (60). The device according to the invention comprises a movable beam barrier (17), a movable beam sampling module (20) and a measuring device (10) with a radiation detector (12).

公开(公告)号：US20240019299A1

公开(公告)日：2024-01-18

申请号：US18353225

申请日：2023-07-17

Applicant: Dymax Corporation

Inventor： Stephen P. Simonin ,  Walter Lin ,  William Anderson ,  David Barkus

IPC: G01J1/42 ,  G01J1/04 ,  G01J1/44

CPC classification number: G01J1/429 ,  G01J1/0414 ,  G01J1/44 ,  G01J2001/444

Abstract: According to an aspect, a UV radiometer is provided. The UV radiometer includes a sensor assembly and a sensor controller. The sensor assembly includes a UV sensor element and a temperature sensing component configured to perform a thermal adjustment of a sensed UV input from the UV sensor element to produce a compensated UV signal. The sensor controller includes a signal conditioning circuit configured to receive the compensated UV signal from the sensor assembly and produce a conditioned and compensated UV signal. The sensor controller also includes a communication interface configured to transmit the conditioned and compensated UV signal to a UV process controller.

公开(公告)号：US20230400355A1

公开(公告)日：2023-12-14

申请号：US18455522

申请日：2023-08-24

Applicant: Calumino Pty Ltd.

Inventor： Gabrielle de Wit

IPC: G01J5/20 ,  G01J5/02 ,  G01J5/40 ,  G02B26/08 ,  G01J1/04 ,  G01J1/44

CPC classification number: G01J5/20 ,  G01J5/0225 ,  G01J5/40 ,  G02B26/0866 ,  G02B26/085 ,  G01J1/0414 ,  G01J1/44 ,  G02B26/0833 ,  G01J2005/106

Abstract: Systems, methods, and apparatuses for providing on-board electromagnetic radiation sensing using beam splitting in a radiation sensing apparatus. The radiation sensing apparatuses can include a micro-mirror chip including a plurality of light reflecting surfaces. The apparatuses can also include an image sensor including an imaging surface. The apparatuses can also include a beamsplitter unit located between the micro-mirror chip and the image sensor. The beamsplitter unit can include a beamsplitter that includes a partially-reflective surface that is oblique to the imaging surface and the micro-mirror chip. The apparatuses can also include an enclosure configured to enclose at least the beamsplitter and a light source. The light source can be attached to a printed circuit board. Optionally, the enclosure can include an inner surface that has an angled reflective surface that is configured to reflect light from the light source in a direction towards the beamsplitter.

公开(公告)号：US11841267B2

公开(公告)日：2023-12-12

申请号：US17113759

申请日：2020-12-07

Applicant: Gigaphoton Inc.

Inventor： Yosuke Watanabe ,  Masato Moriya

IPC: G01J1/04 ,  G01J1/42 ,  G02B27/28 ,  H01S3/00 ,  H01S3/225

CPC classification number: G01J1/0414 ,  G01J1/0429 ,  G01J1/4257 ,  G02B27/283 ,  H01S3/0014 ,  H01S3/225

Abstract: An energy measuring apparatus according to one aspect of the present disclosure includes a first beam splitter, a second beam splitter, a third beam splitter, and a fourth beam splitter, which sequentially reflect part of a main beam and input the beam to an energy sensor. The first beam splitter, the second beam splitter, the third beam splitter, and the fourth beam splitter are each arranged to have such an incident angle and a folding direction of an optical path as to suppress a change in detection value of the energy sensor due to a change in incident angle and a change in polarization purity of the main beam.

公开(公告)号：US20230273067A1

公开(公告)日：2023-08-31

申请号：US18019231

申请日：2021-07-14

Applicant: KONICA MINOLTA, INC.

Inventor： Yukitroy WILLIAMS ,  Yutaka KADOWAKI

IPC: G01J1/04

CPC classification number: G01J1/0414 ,  G01J1/044 ,  G01J1/0403

Abstract: A photometer includes a luminous flux splitter that splits a luminous flux incident from a single light receiving optical system and guides the luminous flux to a finder optical system and a photometric part. A light receiver is arranged at a position to receive at least a part of light split into the finder optical system by the luminous flux splitter and generates an output for light emission profile analysis according to a light reception result.

公开(公告)号：US11692870B2

公开(公告)日：2023-07-04

申请号：US17209635

申请日：2021-03-23

Applicant: PixArt Imaging Incorporation

Inventor： Hui-Hsuan Chen ,  Nien-Tse Chen

IPC: G01S7/481 ,  G01J1/02 ,  G01J1/04 ,  G02B27/14 ,  G01S7/499 ,  G01S17/04

CPC classification number: G01J1/0204 ,  G01J1/0233 ,  G01J1/0414 ,  G01J1/0466 ,  G01J1/0488 ,  G01S7/4811 ,  G01S7/4813 ,  G01S7/499 ,  G01S17/04 ,  G02B27/144 ,  Y10T29/49016

Abstract: A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.

公开(公告)号：US20180306643A1

公开(公告)日：2018-10-25

申请号：US15853857

申请日：2017-12-25

Applicant: Tsinghua University ,  HON HAI PRECISION INDUSTRY CO., LTD.

Inventor： JUN ZHU ,  LEI HUANG ,  GUO-FAN JIN ,  SHOU-SHAN FAN

IPC: G01J1/42 ,  G01J1/02

CPC classification number: G01J1/4257 ,  G01J1/0252 ,  G01J1/0414 ,  G01J1/4228 ,  G01J2001/4247

Abstract: A system for measuring light intensity distribution is provided and set in a vacuum environment. The system for measuring light intensity distribution comprises a carbon nanotube array located on a surface of a substrate, a reflector, an imaging element and a cooling device. The substrate is cooled by the cooling device to make a contacting surface between the substrate and the carbon nanotube array maintain a constant temperature. The carbon nanotube array is irradiated by a light source to make the carbon nanotube array radiate a visible light, and the substrate is continuously cooled to make the contact surface between the substrate and the carbon nanotube array maintain the constant temperature. The visible light is reflected with the reflector. The visible light reflected by the reflector is imaged with the imaging element to obtain the light intensity distribution of the light source.

公开(公告)号：US20180210151A1

公开(公告)日：2018-07-26

申请号：US15412116

申请日：2017-01-23

Applicant: II-VI Incorporated

Inventor： Mark H. Garrett ,  Mark Filipowicz ,  Siegfried Fleischer

IPC: G02B6/26 ,  G02B6/42 ,  G02B26/08 ,  G01J1/04 ,  G01J1/42 ,  G02B6/32

CPC classification number: G02B6/266 ,  G01J1/0414 ,  G01J1/0425 ,  G01J1/0437 ,  G01J1/4228 ,  G01J1/4257 ,  G02B6/4214 ,  G02B6/4286 ,  G02B26/0833

Abstract: A free space variable optical attenuator (VOA) utilizes a beamsplitter to create tap beams (of both the input signal and the beam-steered output signal) that are directed into monitoring photodiodes. The beamsplitter is configured to exhibit a non-equal splitting ratio such that the tap beams are only a relatively small portion of the input/output beams. The free space configuration eliminates the need for fiber-based couplers, splices and connections to external monitors, as required in prior art VOA monitoring systems. The VOA utilizes a voltage-controlled, MEMS-based tilt mirror to provide beam steering of the propagating, free space beam in a known manner to introduce attenuation (power reduction) in the output signal.